1 files changed, 1 insertions, 55 deletions

diff --git a/includes/rts/storage/Closures.h b/includes/rts/storage/Closures.h
index 5f4f03541f..fcba1ebeb6 100644
--- a/includes/rts/storage/Closures.h
+++ b/includes/rts/storage/Closures.h
@@ -240,60 +240,6 @@ typedef struct {
 #define BCO_BITMAP_SIZEW(bco) ((BCO_BITMAP_SIZE(bco) + BITS_IN(StgWord) - 1) \
 			        / BITS_IN(StgWord))
 
-/* -----------------------------------------------------------------------------
-   Dynamic stack frames for generic heap checks.
-
-   These generic heap checks are slow, but have the advantage of being
-   usable in a variety of situations.
-
-   The one restriction is that any relevant SRTs must already be pointed
-   to from the stack.  The return address doesn't need to have an info
-   table attached: hence it can be any old code pointer.
-
-   The liveness mask contains a 1 at bit n, if register Rn contains a
-   non-pointer.  The contents of all 8 vanilla registers are always saved
-   on the stack; the liveness mask tells the GC which ones contain
-   pointers.
-
-   Good places to use a generic heap check: 
-
-        - case alternatives (the return address with an SRT is already
-	  on the stack).
-
-	- primitives (no SRT required).
-
-   The stack frame layout for a RET_DYN is like this:
-
-          some pointers         |-- RET_DYN_PTRS(liveness) words
-          some nonpointers      |-- RET_DYN_NONPTRS(liveness) words
-			       
-	  L1                    \
-          D1-2                  |-- RET_DYN_NONPTR_REGS_SIZE words
-	  F1-4                  /
-			       
-	  R1-8                  |-- RET_DYN_BITMAP_SIZE words
-			       
-	  return address        \
-	  liveness mask         |-- StgRetDyn structure
-	  stg_gen_chk_info      /
-
-   we assume that the size of a double is always 2 pointers (wasting a
-   word when it is only one pointer, but avoiding lots of #ifdefs).
-
-   See Liveness.h for the macros (RET_DYN_PTRS() etc.).
-
-   NOTE: if you change the layout of RET_DYN stack frames, then you
-   might also need to adjust the value of RESERVED_STACK_WORDS in
-   Constants.h.
-   -------------------------------------------------------------------------- */
-
-typedef struct {
-    const StgInfoTable* info;
-    StgWord        liveness;
-    StgWord        ret_addr;
-    StgClosure *   payload[FLEXIBLE_ARRAY];
-} StgRetDyn;
-
 /* A function return stack frame: used when saving the state for a
  * garbage collection at a function entry point.  The function
  * arguments are on the stack, and we also save the function (its
@@ -430,7 +376,7 @@ typedef struct {
 
 typedef struct {
   StgHeader      header;
-  StgBool        running_alt_code;
+  StgWord        running_alt_code;
   StgClosure    *first_code;
   StgClosure    *alt_code;
 } StgCatchRetryFrame;